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dodecagon
[dodecagon 词源字典]
"A plane figure with twelve straight sides and angles", Late 17th century: from Greek
dōdekagōnon
, neuter (used as a noun) of
dōdekagōnos
'twelve-angled'.
[dodecagon etymology, dodecagon origin, 英语词源]
[dodecagon 词源字典]